How to add 2nd Hard drive to Ubuntu

To add/mount the second hard drive into Ubuntu, open up the terminal window and type:

sudo fdisk -l

Where sdb is our newly added Secondary Harddisk!

To create the partition on the second Hard drive, use the following command and follow the “on screen” instructions:

sudo fdisk /dev/sdb

Use the partprobe command to update the kernel with the changes:

sudo partprobe /dev/sdb

Where /dev/sdb is my device name, you can use your’s!

Now we need to format our newly created partition using the following command:

sudo mkfs /dev/sdb1 -t ext4

Verify the newly created partition:

sudo fdisk -l

Next you need to create a directory for a mount point:

cd /mnt/
sudo mkdir 2ndHDD 
sudo chmod 0777 2ndHDD
ls -l

Next, mount the newly created sdb1 parition into 2ndHDD directory:

sudo mount /dev/sdb1 /mnt/2ndHDD -t ext4

Updated: Run this command once more:

sudo chmod 0777 2ndHDD

Now, we make a test that we can write a file on to the new drive:

touch /mnt/2ndHDD/test.txt
ls /mnt/2ndHDD/* 

Next time, when we will reboot the computer, it will be gone. If we want to mount new hard drive permanently then we need to edit the fstab file:

sudo nano /etc/fstab

Add this line at the end of the fstab file(you can adjust it according to your requirement):

/dev/sdb1 /mnt/2ndHDD ext4 defaults 0 0

Use this command or else reboot your computer:

sudo mount –a

Hope this will help you!

Please Remember me in your prayers!

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10 responses to “How to add 2nd Hard drive to Ubuntu

  1. roy June 25, 2012 at 7:33 pm

    rbgeek, been looking for a tutorial such as yours as I have ssd as a boot drive and wanted to incorporate my existing hdd for additional storage. However, I implemented your instructions to a “t” and still can’t get the second drive to mount. Any suggestions? Thanks.

  2. Scop]pq h53poeqrj ergpo October 13, 2012 at 9:51 pm

    YUP THIS DOES NOT WORK!!!

  3. Gordon Phillips December 8, 2012 at 7:54 pm

    Thank you! – worked great!

  4. Jesse January 28, 2013 at 3:51 am

    Seems to have worked for me as well. Thanks!

  5. Mack March 11, 2013 at 5:49 pm

    Work great for me! I added three drives that contained a total of five partitions.

  6. Steve June 10, 2013 at 10:21 am

    Works perfectly – thanks for a clear, concise and accurate tutorial

  7. Brantan August 8, 2013 at 6:03 pm

    Thank you! Was very helpful tutorial.

  8. Nick April 6, 2015 at 5:46 pm

    Worked great for me – now what course do I take to un-mount the drive should the need arise.

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